Global Patent Index - EP 1028128 A4

EP 1028128 A4 20010404 - CYCLOOLEFIN POLYMER REDUCED IN CATALYST RESIDUE CONTENT, USE THEREOF, AND PROCESS FOR PRODUCING THE SAME

Title (en)

CYCLOOLEFIN POLYMER REDUCED IN CATALYST RESIDUE CONTENT, USE THEREOF, AND PROCESS FOR PRODUCING THE SAME

Title (de)

CYCLOOLEFIN POLYMER MIT REDUZIERTEM GEHALT KATALYSATORRÜCKSTAND, VERWENDUNG UND VERFAHREN ZUR HERSTELLUNG DAVON

Title (fr)

POLYMERE OLEFINIQUE CYCLIQUE A TENEUR REDUITE EN RESTE DE CATALYSEUR, UTILISATION D'UN TEL POLYMERE ET PROCEDE DE PRODUCTION CORRESPONDANT

Publication

EP 1028128 A4 20010404 (EN)

Application

EP 98947907 A 19981016

Priority

  • JP 9804686 W 19981016
  • JP 28348997 A 19971016
  • JP 8159098 A 19980327

Abstract (en)

[origin: EP1028128A1] A cyclic olefin polymer having a small content of a catalyst residue, a production process for the same and use of the same as an optical material. Catalysts used for polymerization and/or hydrogenation reaction for forming the cyclic olefin polymer are decomposed efficiently by adding at least one compound selected from the group consisting of an alpha -oxyacid and beta -oxyacid having one hydroxyl group and one carboxyl group in the molecule and derivatives obtained by substituting hydroxyl group thereof by an alkoxyl group, and the decomposition products are removed by rendering them insoluble in a reaction solvent used for the polymerization and/or hydrogenation reaction and precipitating them efficiently.

IPC 1-7

C08F 6/08; C08F 10/00; C08F 6/02

IPC 8 full level

C08F 4/62 (2006.01); C08F 4/70 (2006.01); C08F 6/02 (2006.01); C08L 23/08 (2006.01)

CPC (source: EP KR US)

C08F 4/61912 (2013.01 - KR); C08F 6/02 (2013.01 - EP US); C08F 6/12 (2013.01 - KR); C08F 132/08 (2013.01 - KR); C08L 23/0823 (2013.01 - EP US)

Citation (search report)

Designated contracting state (EPC)

AT BE CH DE ES FR GB IT LI NL SE

DOCDB simple family (publication)

EP 1028128 A1 20000816; EP 1028128 A4 20010404; CA 2306996 A1 19990429; CN 1281470 A 20010124; KR 20010031145 A 20010416; US 6388032 B1 20020514; WO 9920662 A1 19990429

DOCDB simple family (application)

EP 98947907 A 19981016; CA 2306996 A 19981016; CN 98812168 A 19981016; JP 9804686 W 19981016; KR 20007004048 A 20000415; US 52949200 A 20000414